The cloud collars above are pretty!
I am not expert at all on them but have learned quite a bit about them over the years. Where are you located and where do you believe that these came from?
#1 If you believe you have antique pieces on your hands, take them to a local museum to find someone to validate them.
#2 To me, the embroidery seems too perfect and
appears from the pictures to be machine sewn from these pictures. When you look at the back sides of some the stitching appears to be machine sewn.
That in of itself isn't a bad thing - just shows it isn't a really old piece. Just as the actual material pieces on some appear to be machine made.
These are most likely items used for holidays/ceremonies to honor the past of the Buddhist and the Mongolian era. Interesting that none of them have pointed lobes which were more often seen in earliest cloud collars.
A great article for you to read is here:
https://www.amherst.edu/system/files/media/1560/Cammann__Schuyler__The_Symbolism_of_the_Cloud_Collar.pdf